Best strats for each boss in bo6

I’m about to start a journey of doing all of the bo6 Easter eggs, I’ve already done terminus and liberty but I will probably do them both again.

Now when doing my Easter egg research I’ve seen soom strats to kill the bosses with ease but a lot of them seem outdated/patched.

So what are your strats to kill each boss as easy as possible? (idc if it’s kinda cheesy)